Meaning of (कल्पना करना या मान लेना) kalpana karna/man lena in english
As verb :
assume Ex:  However, these theorems assume that general relativity is correct
Suggested : to take for granted or without proof
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(कल्पना करना या मान लेना) kalpana karna/man lena
can be used as verb.. No of characters: 23 including consonants matras.
Transliteration :
kalpanaa karanaa/maana lenaa